Reusable Content Objects

List of available RCOs

Listed below are the Reusable Content Objects, or RCOs, that are used on the Satellite Observations in Science Education Web site. Click a link to learn more about an RCO, how to use it, and to download the RCO.

Satellite Imagery Display and Analysis

• Area Estimator   Estimate the area of a feature within an image
• Channel Mixer   Apply single image channels to R, G, and B values of a new image.
• Contrast Stretch   Interactive contrast stretching within an image
• Feature Finder   User finds and traces feature(s) within an image
• Feature Sizer   Determine the area of a feature within an image using various techniques
• Feature Tracker   Track movement of a feature within an image set
• Multi-Dataset/Multi-Function   Work with multiple datasets with control sets specific to each
• Quiz Image   See if user can pick out an image feature by clicking on it
• Satellite VCR   Satellite imagery loop with VCR style controls
• Sensor Simulator   Simulate a remote sensor Field of View, Signal-to-Noise, or Spectral Resolution.

Data Plotting and Visualization

• Contrast Graph   Plot up to four sets of X-Y data and display value differences as contrast

Organization and Display of Textual Information

• Info Panel   Window with displayed text associated with a drop-down selection

Sequential Mixed-Content Display

• Progressive Disclosure Table   Display a table, revealing content gradually if desired, requiring user interaction
• Sequence Display   Sequentially display a set of procedure/process steps
• Slide Show   Interactive PowerPoint-like functionality

User Input Validation

• Input Validator   Validate numeric or textual user input with control over number of attempts and margin of error

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